1. Types of Waves Unit 5 Chapter 20

2. Types of Waves  All waves transfer energy by repeated vibrations. However, waves can differ in many ways.  The most common way to group waves is by the direction in which they move.  There are two main types of waves:  Longitudinal  Transverse

3. Transverse Waves  waves in which the particles vibrate in an up & down motion (Perpendicular).  made of crests and troughs  Electromagnetic waves are an example of transverse waves.

4. Transverse Waves

5. Longitudinal Waves  waves in which the particles vibrate back & forth (Parallel) along the path the waves moves.  made of compressions and rarefactions.  Sound waves are an example of longitudinal waves.

6. Longitudinal Waves

7. Transverse vs. Longitudinal Waves

8. Surface Waves  waves that form when transverse and longitudinal waves combine close to the boundary of two types of media  look like transverse waves but move in circles instead of up and down.  The particles move forward at the crest but backward at the trough.

9. Surface Waves

10. Links for Videos  Transverse waves  https://www.youtube.com/watch?v=Atlx BODxWHc https://www.youtube.com/watch?v=Atlx BODxWHc  Longitudinal Waves  https://www.youtube.com/watch?v=ubR laCCQfDk https://www.youtube.com/watch?v=ubR laCCQfDk  Transverse vs. Longitudinal  https://www.youtube.com/watch?v=2Wl h3M2a10U https://www.youtube.com/watch?v=2Wl h3M2a10U  Surface Waves  https://www.youtube.com/watch?v=7yP Ta8qi5X8 https://www.youtube.com/watch?v=7yP Ta8qi5X8